package cn.lau.core.utlis.http;


import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import java.io.IOException;
import java.net.URI;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

/**
 * httpClient get,post请求工具
 * @author LauChiPang on 2017/9/5.
 *
 */
public class HttpClientUtils {


		public static String doGet(String url, Map<String, String> param) {

			// 创建Httpclient对象
			CloseableHttpClient httpclient = HttpClients.createDefault();

			String resultString = "";
			CloseableHttpResponse response = null;
			try {
				// 创建uri
				URIBuilder builder = new URIBuilder(url);
				if (param != null) {
					for (String key : param.keySet()) {
						builder.addParameter(key, param.get(key));
					}
				}
				URI uri = builder.build();

				// 创建http GET请求
				HttpGet httpGet = new HttpGet(uri);

				// 执行请求
				response = httpclient.execute(httpGet);
				// 判断返回状态是否为200
				if (response.getStatusLine().getStatusCode() == 200) {
					resultString = EntityUtils.toString(response.getEntity(), "UTF-8");
				}
			} catch (Exception e) {
				e.printStackTrace();
			} finally {
				try {
					if (response != null) {
						response.close();
					}
					httpclient.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			return resultString;
		}

		public static String doGet(String url) {
			return doGet(url, null);
		}

		public static String doPost(String url, Map<String, String> param) {
			// 创建Httpclient对象
			CloseableHttpClient httpClient = HttpClients.createDefault();
			CloseableHttpResponse response = null;
			String resultString = "";
			try {
				// 创建Http Post请求
				HttpPost httpPost = new HttpPost(url);
				// 创建参数列表
				if (param != null) {
					List<NameValuePair> paramList = new ArrayList<NameValuePair>();
					for (String key : param.keySet()) {
						paramList.add(new BasicNameValuePair(key, param.get(key)));
					}
					// 模拟表单
					UrlEncodedFormEntity entity = new UrlEncodedFormEntity(paramList);
					httpPost.setEntity(entity);
				}
				// 执行http请求
				response = httpClient.execute(httpPost);
				resultString = EntityUtils.toString(response.getEntity(), "utf-8");
			} catch (Exception e) {
				e.printStackTrace();
			} finally {
				try {
					response.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}

			return resultString;
		}

		public static String doPost(String url) {
			return doPost(url, null);
		}
		
		public static String doPostJson(String url, String json) {
			// 创建Httpclient对象
			CloseableHttpClient httpClient = HttpClients.createDefault();
			CloseableHttpResponse response = null;
			String resultString = "";
			try {
				// 创建Http Post请求
				HttpPost httpPost = new HttpPost(url);
				// 创建请求内容
				StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
				httpPost.setEntity(entity);
				// 执行http请求
				response = httpClient.execute(httpPost);
				resultString = EntityUtils.toString(response.getEntity(), "utf-8");
			} catch (Exception e) {
				e.printStackTrace();
			} finally {
				try {
					response.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}

			return resultString;
		}

}
